... A heat pump with refrigerant 134a as the working fluid is used to keep a space at 25C by absorbing heat from geothermal water that enters the evaporator at 60C at a rate of .065 kg/s and leaves at 40C. The refrigerant enters the evaporator at 12C with a quality of 15 percent and leaves at the same pressure as saturated vapor. if the compressor consumes 1.6 kW of power determine (a) the mass flow rate of the refrigerant, (b) the rate of heat supply, (c) the COP, and the same rate of heat supply.

Answers (a) 0.0338 kg/s (b) 7.04 kW, (c) 4.40, (d) 0.740 kW